I've seen alot of different electroscopes. I would like to know how they work in more of a general sense. I've seen the electroscopes that use tin foil, and styrofoam cups and stuff. How do those function compared to your design. If you want a better idea of the type of electroscope I mean go to www.zoom.org and search for science fair project idea. If you're able. I'm like my answer within the week. Thanks 